stull
noun
ˈstəl
plural -s
1
: a round timber used to support the sides or back of a mine
2
a
: one of a series of props wedged between the walls of a stope to hold up a platform for supporting miners, ore, or waste or to protect miners from falling stones
b
: a platform held up by stulls
Word History
Etymology
perhaps modification of German stollen post, support, from Old High German stollo